Table 4.

Comparison of changes in lung function and exercise capacity between the survivors and non-survivors among patients with IPF.

	Total	Survivors	Non-survivors
FVC %predicted/year	−0.01 ± 0.04	0.00 ± 0.38	−0.02 ± 0.47
DLco %predicted/year	−0.03 ± 0.05	0.00 ± 0.03	−0.05 ± 0.05*
TLC %predicted/year	0.00 ± 0.04	0.00 ± 0.02	0.00 ± 0.06
6MWD, meter/year	−0.27 ± 0.47	−0.03 ± 0.23	−0.51 ± 0.53*
Resting SpO2, %/year	0.00 ± 0.02	0.00 ± 0.01	0.00 ± 0.02
Lowest SpO2, %/year	−0.01 ± 0.02	0.00 ± 0.02	−0.02 ± 0.02*

Data are presented as means ± standard, unless otherwise indicated. 6MWT, 6-min walk test; DLco, diffusing capacity of the lungs for carbon monoxide; FVC, forced vital capacity; IPF, idiopathic pulmonary fibrosis; PFT, pulmonary function test; SpO₂, peripheral oxygen saturation; TLC, total lung capacity; 6MWD, 6-min walk test distance.

^*p < 0.05 (survivors vs. non-survivors).